# Proposed AD 2000-NM-141-AD: British Aerospace (Jetstream) Model 4101 Airplanes

- Type: Proposed airworthiness directive (not in force)
- Status: Became AD 2001-01-08
- Action: Notice of proposed rulemaking (NPRM).
- Published: October 30, 2000, 65 FR 64629
- Comments due: November 29, 2000
- Became: [AD 2001-01-08](https://openairdocs.org/ad/2001-01-08)
- Docket: 2000-NM-141-AD
- FR document: 00-27798
- Official PDF: https://openairdocs.org/files/sha256/ed/63/ed63002db3ee9cc5a51482beafb55c48c0d79dd3a19ced9fcae0a8ae8895f56b (from https://www.govinfo.gov/content/pkg/FR-2000-10-30/pdf/00-27798.pdf)
- Federal Register: https://www.federalregister.gov/documents/2000/10/30/00-27798/airworthiness-directives-british-aerospace-jetstream-model-4101-airplanes
- Page: https://openairdocs.org/proposed/2000-NM-141-AD

## Summary

This document proposes the adoption of a new airworthiness directive (AD) that is applicable to all British Aerospace (Jetstream) Model 4101 airplanes. This proposal would require inspection for cracking of the mounting brackets of the hydraulic hand pump at the frame attachment flanges, replacement of any cracked bracket with a new bracket, replacement of all bolts and nuts with new bolts and nuts, and installation of a particular `D' packer. This action is necessary to prevent failure of these brackets, which could result in inability to extend the landing gear in an emergency situation where the main hydraulic system is lost. This action is intended to address the identified unsafe condition.

## Notices in this docket

- Oct 30, 2000: Notice of proposed rulemaking (NPRM). (first notice), FR document 00-27798, comments due Nov 29, 2000 (https://www.federalregister.gov/documents/2000/10/30/00-27798/airworthiness-directives-british-aerospace-jetstream-model-4101-airplanes)

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